Load all saved place into memory

Fixes launching the app with a place URL directly, and will be useful
for search etc. later.

tests/unit/routes/place-test.js

@@ -0,0 +1,11 @@
+import { module, test } from 'qunit';
+import { setupTest } from 'marco/tests/helpers';
+
+module('Unit | Route | place', function (hooks) {
+  setupTest(hooks);
+
+  test('it exists', function (assert) {
+    let route = this.owner.lookup('route:place');
+    assert.ok(route);
+  });
+});